Percentage Calculator

What is a Percentage?

A percentage is a number or ratio expressed as a fraction of 100. It is denoted using the percent sign "%". For example, 50% means 50 out of 100, or half of a given quantity.

Common Percentage Calculations

• What is X% of Y? - Calculate a percentage of a value
• Percentage Increase - Add a percentage to a value
• Percentage Decrease - Subtract a percentage from a value

Examples

• What is 20% of 150? Answer: 30
• Increase 100 by 15%? Answer: 115
• Decrease 200 by 10%? Answer: 180